BONANNO, Alfio MaurizioAlfio MaurizioBONANNOSilveravalle, S.S.Silveravalle2021-02-172021-02-1720192470-0010http://hdl.handle.net/20.500.12386/30433The recent discovery of non-Schwarzschild black hole spacetimes has opened new directions of research in higher-derivative gravitational theories. However, despite intense analytical and numerical efforts, the link with the linearized theory is still poorly understood. In this work we address this point for the Einstein-Weyl Lagrangian, whose weak field limit is characterized by the standard massless graviton and a spin-2 ghost. We show that the strength of the Yukawa term at infinity determines the thermal properties of the black hole and the structure of the singularity near r =0 . Moreover, inspired by recent results in the asymptotic safety scenario we investigate the consequences of an imaginary ghost mass. In this case we find a countable set of solutions all characterized by spatial oscillations of typical wavelength determined by the mass of the spin-2 field.STAMPAenArticle10.1103/PhysRevD.99.1015012-s2.0-85066436504000469025200001https://journals.aps.org/prd/abstract/10.1103/PhysRevD.99.1015012019PhRvD..99j1501BFIS/05 - ASTRONOMIA E ASTROFISICA